Home People Kim Jae-joong Kim Jae-joong shows Kim Jae-joong shows Kim Jae-joong TV Shows (9) Manhole (2017) As Bong Pil, He was 31 years old Spy (2015) As Kim Seon-woo, He was 28 years old Triangle (2014) As Heo Young-dal / Jang Dong-chul, He was 28 years old Dr. Jin (2012) As Kim Kyung-tak, He was 26 years old Protect the Boss (2011) As Cha Moo-won, He was 25 years old Hard to Say I Love You (2010) As Park Seonsu / "Doctor", He was 24 years old Explorers of the Human Body (2007) As Himself, He was 21 years old Burst! Mental Concentration (2007) As Himself (as Youngwoong/Hero Jaejoong), He was 21 years old X-Man (2003) As Himself (as Youngwoong/Hero Jaejoong), He was 17 years old